How to Bleed Hydraulic Brakes - Shimano® Reservoir Style
Vložit
- čas přidán 5. 06. 2024
- This video will go over how to bleed Shimano® hydraulic disc brakes featuring a fluid reservoir, using the Park Tool BKM-1 Brake Bleed Kit.
Questions or comments? Leave them below!
See all our disc brake videos in our Disc Brakes Repair Help playlist ▶︎ • Repair Help: Disc Brakes
Video contents:
00:00 Preliminary Info
01:54 Bicycle Prep
02:51 Bleed Kit Prep
03:39 Bleed
06:09 Reset Bicycle
07:07 Clean Kit
➤ Tools & materials used:
• BKM-1 Hydraulic Brake Kit - Mineral - www.parktool.com/product/hydr...
• Mineral Oil
• Hex Wrenches - www.parktool.com/product/p-ha...
• PP-1.2 Hydraulic Brake Piston Press - www.parktool.com/product/hydr...
• Clean Rags
• Alcohol
• Safety Glasses
• Gloves - www.parktool.com/product/nitr...
• #1 Cross Tip Screwdriver
• 7mm Wrench
• Toe Strap & Zip Ties
➤ Subscribe: czcams.com/users/parktool...
➤ Like: / parktool
➤ Follow: / parktoolblue
➤ Fix It:
Did you know that Park Tool is the #1 resource for bicycle repair education?
• Visit our CZcams Channel: / parktool
• Visit the Repair Help section of Parktool.com: www.parktool.com/repairhelp
• Check out The Big Blue Book of Bicycle Repair: www.parktool.com/product/big-...
➤ About Park Tool:
Since our founding in 1963, Park Tool has been the leading name in bicycle tools. Our CZcams channel is an extension of our mission to be the ultimate resource for mechanics and riders of all skill levels. Here you will find comprehensive repair help tutorials for a wide range of components and processes, as well as troubleshooting guides, tips and tricks, and information on the latest Park Tool products.
➤ More Repair Help:
• Fix your bike! ▶︎ • Park Tool Repair Help:... - Jak na to + styl
Very clear and comprehensive, thanks! My bike has this style of brakes and so much of the information online is for the newer style with the separate bleed screw.
this was really helpful, i have same brakes and i didn't know how to bleed them the right way :)
Thank you for an easy to follow video.
this is exactly how i did it too, except with the vacuum syringe on the brake caliper. Great video!
Great video
So helpful, thanks mate
Help repair . Thank you 👌 ✌
good video ,thank you
Parabéns um excelente serviço ❤
Thank you very much
I do not like this style of reservoir system without a top bleed port (to mount a funnel). If one of these has a "spongey" issue, I have to drain the whole line into a cup (gravity+time) then refill the line, pushing up from the bottom syringe.
I watched a video where they extracted the old fluid through the resevoir, which method is better?
Could you do a video on taping frame bolt holes please? Thanks love the channel.
Taping? Or tapping?
Tapping. Apologies!
In
@@mattgies di
I assume it will but will this also work for Hope brakes?
Well that just looks a PITA.
Glad I only have one set of these on a bike I want to sell.
All my other brakes are now Magura MT which are far easier to service as you can just use two syringes and push the fluid between them.
I am just drawing vacuum in the syringe when I try to draw fluid from the reservoir. The fluid level in the reservoir is not dropping.
When I pump the lever there is a squiffing sound from the caliper, so the line from the caliper to the piston at the lever must be open.
It seems however that there is a blockage somewhere between the lever piston and the reservoir or I am not doing it right. (Yes I did open the bleed valve)
I'm replacing the lever and the hose can I just drain all the fluid from the caliper, so the system is empty?
Is it my imagination...or bad eyesight? At 4:10 the diaphragm cover comes out, with indentations downward, at 6:10 it goes back in with the indentations facing upward? 99% sure it the indentations should go in the reservoir. Maybe I did not see it correctly?
And, I prefer caliper-up bleeds as one is not fighting the fact that air bubbles rise. A second person on syringe duty to suck up the fluid being pushed to the lever reservoir is pretty much essential. Agree that this video is the "official" method but hate fighting physics! Love the bleed port/screw in newer models!!
I have an older type of Shimano break similar to the one in the video. They are very very slowly leaking oil (whenever I wipe it after a day it gets oily around the reservoir cap). Would replacing the diaphragm solve the leakage?
Is highly likely that replacing the diaphragm will solve your issue. Finding it will be the challenge. The exact model will be needed to find it.
I have both Shimano mineral oil brakes and SRAM Force DOT 5.1 brakes - with proper fluid for both, does this kit have appropriate components for both?
No, the kits are separate. DOT fluid should never be mixed with brakes or brake tool for mineral fluid.
Can mix a bl m445 lever with a xt m8100 caliper?
I have Dual XT, I love it but bleeding is not enjoyable. Not using the caliper siring, just hose into a reservoir. Gravity helps...
Does brake fluid need change every 2 years like motorbikes and cars? Can i use a normal dot 4 brake fluid or on;y shimano fluid? Thank you!
If they are Shimano brakes yearly s suggested and you must use mineral oil. Due to mineral oil not being a regulated fluid it can vary in its properties so we suggest using Shimano Mineral oil in Shimano brakes.
@@parktool Thank you again!
Hi thx guy . I do that on brm485 .after bleeding my brake make noise . I dont know where this sound came from ?
Often brakes make noise when the pads or rotors have been contaminated with oil or some other kind of liquid chemical. The bleed itself will not cause the squealing.
hi there everyone does anyone know is it fine to do this the other way round you add down in the fluid and take away at the top reservoir i have done it for my dual xt and the lever seems to have a really firm result
If lever is firm, then no air is inside so it worked.
Little strange to see sort of high end Haro equipped with a deore group set have a two bolt bontrager stem
it could be as it trickles down , this years deores were previous years xts or Lx similar, they are good brakes ive used them for over ten years, il upgrade when they are done but until then, i cant complain at all. they are a faff at times though
how you refill from scratch??
How do I do this when my brake callipers don't have a bleed nipple or the spanner to open and close? All I have is a screw hole to access the fluid ? 😩
What brand and model of brakes are you working with?
Time to go back to 'block brakes' 😂
How to find replacement brake pad of that ? I have deore lx. We are same brakepads.
One thing forgot - clean the sides of the pistons before pushing them back in?
Yes that is good practice to actually advance them and clean the dirt off of them. Its often suggested to use the systems fluid to clean them so when teh piston is pushed back in it hydrates the seal. Clean it, push it back in, advance it, clean it again and push it back in. On the last time of cleaning it use alcohol to prevent any contamination of the pads.
wouldn't it be better to push the oil upwards from the caliper so the air can rise ?
There are different techniques possible. In this case the factory recommendation was to go top down. As long as the air is out, it is good.
@@parktool thank youuuuu
That's what I do with my Magura brakes, but I don't think that these bath style levers really have the fittings to do that.
@@user-yv2cz8oj1k no you need the ones you can fit a funnel at top. you push dirty oil into it from bottom, or in your case two syringes i think
At least I know I did it right.
Even after the bleed procedure, the brake lever still travels too close to the bars.
Unfortunately you may have to bleed them again, until they work.
What happens if you dont take the wheel off?
The pistons need to be pushed back into the caliper body for bleeding. The brake block keeps them from creeping inward as you bleed. This is why the wheels are removed. Even for systems that don't need that, it is too easy to get fluid on the pads and rotor.
@@parktool thanks. The reason I ask is because sometimes in reality I dont have that much time
@@diegeeleel As sometimes things get messy, and you need the brake to work out where it needs to settle as it was designed to do. I'd always advise using a piston chuck block, even if you need to make one out of some scrap wood, otherwise you also risk pushing the pistons out of the brake and you won't realise until you keep getting air in the system, scratching your head as to why, and suddenly you realise the pistons are no longer in the caliper.
What is the name for this breaks
Lizzie and Fabio.
@@user-yv2cz8oj1k thanks and get out here mdfk
Why are you going against gravity? Shouldn't pump at the bottom and suck at the top?
only if you have the type that can fit a funnel at reservoir
Hayes?
On the list to get done.
@@parktool You should take as an example the Dyno sport
Can you please create
a video for replacing rear Shimano brake levers?
But how to know when you must replace the fluid ( mineral oil) ?
When your brakes stop working. You change brake pads and it still doesn’t work properly- you feel that handle needs to be traveled more to brake properly- then you need to change fluid. Also when you open the reservoir and you see that fluid is transparent or dirty not red or pink or green in other cases - that also a sign to bleed the system.
When your braking isn't what you expect and you checked your pads and they are fine. I bled one I bought and it wasn't full plus the oil had gone a bit clear and with some black bits where the colorant had seperated, either meaning it was very old, or someone had resorted to baby oil.
Aren't these all possible without removing the wheel?!🤔
You need to remove the wheel to install the bleed block and to prevent any fluid from accidentally getting on the disk or pads. The blocks make sure the correct amount of fluid is in the system.
Who the hell came up with the idea of using disc brakes on bikes!?!?! What a freaking nightmare!!!!!
There are some bikes that use disc + pad without hydraulic pressure!
Caution with allergy ✌
Am I the only one that ruined there bike from this
Yes. It's probably just you.